Proximate and ultimate causes of animal behaviour
Sponsored Links
This presentation is the property of its rightful owner.
1 / 16

Proximate and Ultimate Causes of Animal Behaviour PowerPoint PPT Presentation


  • 74 Views
  • Uploaded on
  • Presentation posted in: General

Proximate and Ultimate Causes of Animal Behaviour. The beewolf wasp ( Philanthus triangulum ). Beewolf wasp burrows. Niko Tinbergen: one of the founders of ethology. The Scientific Method. Observation and causal question H ypothesis P redictions Test of predictions Conclusion.

Download Presentation

Proximate and Ultimate Causes of Animal Behaviour

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Proximate and Ultimate Causes of Animal Behaviour


The beewolf wasp(Philanthus triangulum)


Beewolf wasp burrows


Niko Tinbergen: one of the founders of ethology


The Scientific Method

  • Observation and causal question

  • Hypothesis

  • Predictions

  • Test of predictions

  • Conclusion


The Scientific Method

  • Observation and causal question: Beewolves find the entrance to their own nests. How do they do it?

  • Hypothesis: They use local landmarks as cues

  • Predictions: If they use local landmarks then manipulating those landmarks should mislead them

  • Test of predictions: Experiments

  • Conclusion: Yes, local landmarks are used by beewolves as cues in finding own nest


Black-headed gull

… and its chicks


The Scientific Method

  • Observationand causal question - black headed gulls remove eggshells. Why did black headed gulls evolve behaviour of eggshell removal?

  • Hypothesis - maybe this behaviour helps parent gulls to conceal their offspring from predators

  • Predictions - if so, broken eggshells should help predators find food

  • Test of predictions - experiment

  • Conclusion - yes, eggshell removal

    appears to help parent gulls conceal

    offspring from predators


Proximate causesUltimate causesof behavour


Oystercatcher

Kittiwake

Black-headed gull


Oystercatcher

Solitary nesting

Nest predators

Immediate eggshell removal

Kittiwake

Group nesting

No nest predators

No eggshell removal

Black-headed gull

Group nesting

Nest predation present

Delayed eggshell removal


Why

do

babies

cry???


  • Login